C# Signature:

[DllImport("kernel32.dll")]
static extern IntPtr OpenProcess(ProcessAccessFlags dwDesiredAccess, [MarshalAs(UnmanagedType.Bool)] bool bInheritHandle, int dwProcessId);

or

[DllImport("kernel32.dll")]
public static extern IntPtr OpenProcess(int dwDesiredAccess, bool bInheritHandle, int dwProcessId);

VB.NET Signature:

<DllImport("kernel32.dll")> _
Private Shared Function OpenProcess(ByVal dwDesiredAccess As ProcessAccessFlags, <MarshalAs(UnmanagedType.Bool)> ByVal bInheritHandle As Boolean, ByVal dwProcessId As Integer) As IntPtr
End Function

Boo Signature:

[DllImport("kernel32")]
static def OpenProcess(dwDesiredAccess as ProcessAccess, bInheritHandle as bool, dwProcessId as int) as IntPtr:
     pass

User-Defined Types:

ProcessAccess

Notes:

None.

Tips & Tricks:

Please add some!

Sample Code (VB.NET):

' Get the handle of a running process
Dim curProcess As Process = Process.GetCurrentProcess()
hProcess = OpenProcess(PROCESS_ACCESS.PROCESS_QUERY_INFORMATION, True, curProcess.Id)

Flags:

[Flags]
enum ProcessAccessFlags : uint
{
    All = 0x001F0FFF,
    Terminate = 0x00000001,
    CreateThread = 0x00000002,
    VMOperation = 0x00000008,
    VMRead = 0x00000010,
    VMWrite = 0x00000020,
    DupHandle = 0x00000040,
    SetInformation = 0x00000200,
    QueryInformation = 0x00000400,
    Synchronize = 0x00100000
}